Maetin eyeeson



M. RYERSON.

Whifetree.

Pafented Aug. 27, 1867.

N.PEI'ERS. PHGTO-LITHWRAPMER. WASHINGTONV D CA @stuiten tstr strnt ffies.

MARTIN RYERso'N, or HUNTSVILLE, ALABAMA.

Letters Patent No. 68,237, dated August 27, 1867'.

IMPROVEMENT IN SWINGLE-TREES.

TO ALL WHOM .IT MAY CONCERN:

Be it known that I, MARTIN RYERSON, 'of Huntsville, in the county of Madison, and State of Alabama, have invented 'a new and useful Improvement in Swingle-Trees; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in-tlie art to make and use thesame, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a top View of my improved iron-rod swingle-tree, showing itsattachment to a wagon.

Figure 2 is a partial front view.

Similar letters of reference indicate like parts. y

This invention relates to an improvement in swingle-trees or double-trees for Wagons, and consists in coustructing the ,sWingle-tree of iron rods in a barrel-like form, secured on a strong middle disk, and' smaller side disks as supports and braces, and united at the ends by weldingior fastening a collar in any convenient manner. This construction makes the swingle-tree exceedingly light, strong, and durable, and it may be attached to the wagon by chains in a manner to be more eiective in draught on rough roads.

TWG or more bars of rod iron, a a, are bound together in barrel form upon a strong middle disk, and Aat the ends are united and fastened firmly by Welding, or in any suitable manner, with bitching-hooks or eyes c c at the extremities in the usual way. Between the ends and the middle disk b are placed smaller intermediate disks b bl, which serve, with the middle disk b, to support the rods a a and brace them firmly, so as to give the swingle-tree thus constructed immense strength` compared with its weight. Short rods extend from the small disks b b to the ends of the double-tree. At the back part of the ring b is fastened a. hook, d, for connecting with three chains that are fastened to the axle of'a wagon, the middle chain running straight back in the direct `central line of d1'aught,and the two outside chains attached to the axle-tree at equal distances on each side of the middle chain, as shown in red lines in iig. 1. By this method of attaching the sWinglc-tree to thevaxle-tree of a wagon the draught of the horses is always exerted directly upon the wheel which is overcoming an obstacle in the road, and is equalized or divided upon the two wheels alike when they have equal resistance on the road to their movement. On the lower side of the swingle-tree a pin, e, is fastenedon the middle ring b, for the purpose of connecting withthe draught-pole asusual.

Having described my invention, I claim as-new, and desire to secure by Letters Patent- A swingle-tree, constructed of iron rods a a in a barrel form, bound together and supported by disks b and b b', and arranged and applied substantially as herein described.

MARTIN RYERSON.

Witnesses:

JOHN H. DARGIN, J. M, BURKE. 

